Comment 5 for bug 1882678

Reviewed: https://review.opendev.org/735216
Committed: https://git.openstack.org/cgit/starlingx/ansible-playbooks/commit/?id=01819d5090bc8da039533dd0ac915b35cc489db1
Submitter: Zuul
Branch: master

commit 01819d5090bc8da039533dd0ac915b35cc489db1
Author: Andy Ning <email address hidden>
Date: Thu Jun 11 09:19:41 2020 -0400

    Run kubeadm command with specific configuration file

    Playbook uses the kubeadm command to deploy kubernetes. However,
    it is not passing the --kubeconfig parameter to this command, so
    the command will search for the kubeconfig file. Normally it finds
    this file in /etc/kubernetes/admin.conf, but if a user accidentally
    (or intentionally) creates a config file at /root/.kube/config,
    this file can take precedence and cause the kubeadm command to fail.

    This commit updated the command with /etc/kubernetes/admin.conf as its
    configuration file explicitly.

    Change-Id: Id97a7c25cd6f0a0b3cc31276dd77c193fcbdefc6
    Closes-Bug: 1882678
    Signed-off-by: Andy Ning <email address hidden>